When Abdullah bin Umar (may Allah be pleased with them both) was asked about breastfeeding (raḍā‘ah), he said: "All we know is that Allah has made a sister unlawful (for marriage) through breastfeeding."

Sayyiduna Umar bin Khattab (may Allah be pleased with him) said: "Suckling is only considered valid in childhood."

A woman gave her husband water to drink from her milk on a hot day. Sayyiduna Umar bin Khattab (may Allah be pleased with him) said: "Leave her, there is no good for you in her, and if you keep her, then punish her severely."

A man took something from his wife's milk through his nose or throat. Abu Musa al-Ash'ari (may Allah be pleased with him) said: "That woman has become forbidden to him." But Abdullah bin Mas'ud (may Allah be pleased with them) said: "There is no consideration for suckling after two years; suckling is only that which strengthens the bone and grows the flesh." Abu Musa al-Ash'ari (may Allah be pleased with him) said: "As long as this scholar (Abdullah bin Mas'ud) is present, do not ask me anything."

Hazrat Abu Salamah bin Abdur Rahman, Abu Bakr bin Sulaiman, Saeed bin Musayyib, and Ata bin Yasar (may Allah have mercy on them) were asked, and all of them said: "There is no harm in the milk of a stallion (male animal)."

Hazrat Sa'id bin al-Musayyib (may Allah have mercy on him) said: The Messenger of Allah (peace and blessings be upon him) said: "The prohibition (of marriage) due to suckling is the same as the prohibition due to lineage."

Sayyiduna Uqbah bin Al-Harith (may Allah be pleased with him) narrated that he said to the Messenger of Allah (peace and blessings be upon him): "I have married the daughter of Abi Ihab, and a woman claims that she has breastfed both of us." So the Messenger of Allah (peace and blessings be upon him) turned away from him. Uqbah came from the other side, but he turned away again. Then he came from the front and said: "O Messenger of Allah! That woman is black." The Messenger of Allah (peace and blessings be upon him) said: "When it has been said (that she has breastfed you), (then the marriage is not permissible)."

Ibn Tawus narrates from his father, who said: "In the matter of breastfeeding, the testimony of a woman is accepted, even if she is black."

Hashim narrated from Ibn Abi Layla and Hajjaj, from Ikrimah bin Khalid Makhzumi, that a woman was brought before Sayyiduna Umar bin Khattab (may Allah be pleased with him) who testified about a man and his wife that she had breastfed both of them. So Sayyiduna Umar bin Khattab (may Allah be pleased with him) said: "No, not unless two men or one man and two women testify."

It is narrated from Wahb bin Uqbah (who was born in the time of Uthman, may Allah be pleased with him) that a woman gave testimony regarding breastfeeding, saying: I breastfed a man and his wife. So Sayyiduna Uthman bin Affan, may Allah be pleased with him, said: "She should swear an oath by the Ka'bah." But when she was pressed hard, she retracted.